Drillex '87 : papers presented at the Drillex '87 conference /

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Ngā kaituhi rangatōpū: Drillex '87 Conference Stonleigh, Eng., Institution of Mining and Metallurgy (Great Britain), British Drilling Association
Hōputu: Conference Proceeding Pukapuka
Reo:Ingarihi
I whakaputaina: London : Institution of Mining and Metallurgy, 1987.
Ngā marau:
Core drilling.
Drilling and boring.
Mining and engineering.
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